When comparing Iris vs OneStepBack, the Slant community recommends OneStepBack for most people. In the question“What are the best gtk3 themes?”OneStepBack is ranked 6th while Iris is ranked 9th. The most important reason people chose OneStepBack is:

The color combination has been carefully engineered exactly for the purpose of making people comfortable, while staring at the monitor for a prolonged period of time.

Pros

Pro

Purchasable filters to heighten visibility in certain conditions

Iris has filters that can be purchased through in app purchases that allow for increased visibility in certain lighting situations.

Pro

Easily turned on and off

Iris has a quick toggle in the notification drawer with allows for the user to easily turn on and off the function of the app.

Pro

Puts an overlay of your camera feed on top of all other apps

By overlaying what the camera sees over any app on the device, users can see what is in front of them while still looking at their screen, retaining all the functionality of every app or game they use.

Pro

Easy on the eyes

The color combination has been carefully engineered exactly for the purpose of making people comfortable, while staring at the monitor for a prolonged period of time.

Pro

Allows you to focus on what's needed

The design is extremely basic - using just 1 color accompanied by 3 shades of grey, OneStepBack manages to be a very functional theme without adding any flashy.

Cons

No cons yet!

Con

Funky arrow button colors in FireFox

The developer is currently aware of this issue, however the fix can't be made until FireFox has an update.